How can I expand a vector into the arguments of a function in r?

Question

If I have the function with three individual arguments

fun <- function(a,b,c){
    a+b^2*c
}

How can I call it using a single vector

my_vector <- c(1,2,3)
fun(my_vector)

Answer 1

try this:

> do.call("fun", as.list(my_vector)) [1] 13